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| author |   Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2014-10-15 16:50:52 +0100 |
|---|---|---|
| committer |   Daniel Lezcano <daniel.lezcano@linaro.org> | 2014-11-19 10:16:15 +0100 |
| commit | 97735da074fdd3fe39d975cad8760807df0d4388 (patch) | |
| tree | c54a15ea6798d01078f838eef35a946cc939b215 /Documentation/devicetree | |
| parent | Linux 3.18-rc5 (diff) | |
| download | linux-dev-97735da074fdd3fe39d975cad8760807df0d4388.tar.xz linux-dev-97735da074fdd3fe39d975cad8760807df0d4388.zip | |
drivers: cpuidle: Add status property to ARM idle states
On some platforms the device tree bindings must provide the kernel
with a status flag for idle states, that defines whether the idle
state is operational or not in the current configuration.
This patch adds a status property to the ARM idle states compliant
with ePAPR v1.1 and updates the DT parsing code accordingly.
Acked-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/arm/idle-states.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/idle-states.txt b/Documentation/devicetree/bindings/arm/idle-states.txt index 37375c7f3ccc..5e5151130c20 100644 --- a/Documentation/devicetree/bindings/arm/idle-states.txt +++ b/Documentation/devicetree/bindings/arm/idle-states.txt @@ -317,6 +317,20 @@ follows: In such systems entry-latency-us + exit-latency-us will exceed wakeup-latency-us by this duration. + - status: + Usage: Optional + Value type: <string> + Definition: A standard device tree property [5] that indicates + the operational status of an idle-state. + If present, it shall be: + "okay": to indicate that the idle state is + operational. + "disabled": to indicate that the idle state has + been disabled in firmware so it is not + operational. + If the property is not present the idle-state must + be considered operational. + In addition to the properties listed above, a state node may require additional properties specifics to the entry-method defined in the idle-states node, please refer to the entry-method bindings |